Type-writer attachment.



H. C. CLINTON.

TYP'E WRITER ATTACHMENT.

APPLICATION FILED APR. 29, 19M.

2 SHEETS-SHEET l.

' CCZZHZOYI T H. C. CLINTON.

T PE WRITER ATTACHMENT. APPljiCATION FILED APR. 29, I914. Llgfiwwfigw Patented Apr. 13, 1915,

2 SHEETS-SHEET 2.

hurrah sTaTns PA ENT orrrbn HENRIETTAC. CLINTON, OF SAN FRANCISCO, CALIFORNIA.

TYPE-WRITER ATTACHMENT.

to provide an attachment of the character described which is capable of being readily attached to different styles of typewriters.

Another important object of the invention is to provide an attachment of the character described which consists of a pulley to be operatively connected with the carriage of v the typewriter and to operate the same and clutch means .to be rotated and subsequently rotate the pulley for returning the carnage,

that is automatically moved into released or inoperative position, and the pulley permitted free rotation in either direction. I

Another important object of the inventlon is to provide an attachment of the character described. which is extremely simple as to construction, reliable and efiicient in operation and cheap to manufacture.

The above and additional objects are accomplished by such means as are illustrated in the accompanying drawings, described in the following specification, and then particularly pointed out in the claims which are appended hereto and form a part of this application.

With reference to the drawings, wherein I have illustrated the preferred embodiment of my invention as it is reduced to practice, and throughout the several views of which similar reference numerals designate corresponding parts, Figure 1 is a perspective view showing the attachment as applied to a typewriter, Fig. 2 is a side elevation partly in section of the improved attachment, Fig. 3 is an end elevation of the attachment, Fig. 4 is a vertical sectional view taken on line H of Fig. 2, particularly illustrating the clutch means and coiiperating parts in assembled position, Fig. 5 is a sectional view taken on line 5-5 of Fig. 4 illustrating the tension spring, Fig. 6 is a detail elevation of the operatingv pulley removed from the clutch means, Fig. 7 is a detailperspective Specification of Letters Patent.

Application filed April 29, 1914. Serial No. 835,239.

view of the clutch means, Fig. 8 is a detail perspective View of the collar used in connection with the tension spring, Fig. 9 is a detail perspective view of the shaft for supporting the operating pulley and clutch means, Fig. 10 is a detail perspective view of-the collar operated in connection with the spring means for automatically releasmg the clutch means, and Fig. 11 is a detail perspective view of the guide bracket for guiding the flexible connection that is pulled when the device is operated.

Referring to the drawings and particularly to Fig. 1, the numeral 1 designates as an entirety a typewriter to which is attached the improved attachment therefor designated 2 as an entirety, this attachment 2 is operatively connected with the carriage designated 3 by means of a suitable flexible means 4. This tape at is provided with a suitable eyelet or attaching ring 5 that is fitted over the line spacing lever 6. A pull is given the tape 4 by means of the attachment 2 which will be laterdescribed and the carriage 3 is returned to normal position and as will be readily seen the line spacing is provided.

T-heattachment 2 consists of a U-shaped securing bracket 7 that is provided with a securing screw 8 and suitable nut 9 disposed within its bight portion and arranged to be secured to a typewriter and project laterally therefrom adjacent one side thereof. Bearing surfaces 10 are formed at the free ends of thearms of the U-shaped bracket 7 and coiiperate with detachable bearing plates 11 that are secured by screws or other suitablefastening means, in supporting a shaft 12.

Rotatably mounted upon the shaft 12 is an operating pulley 13 that is provided with an enlarged offset hub portion 14 for a purpose which will be later more fully described. One end of the tape 4 is suitably secured to the pulley 13. Formed in'the outer end of the enlarged hub portion 14 is a circular recess 15 provided with a slot inits side wall to receive one terminal of a flat expansive spring 16 that is arranged within the recess 15. A flanged cap 17 is fitted upon the outer end of the hub portion 14 to protect the spring 16.

Mounted upon the shaft 12 and interior-1y of the hub 14: is a sleeve 18 having a lug 19 formed thereon adjacent one end to which is secured the other terminal of the spring 16. This sleeve 181s provided adjacent its outer end with an inwardly extending recess arranged to receive a lug 21 formed adjacent one terminal of the shaft 12 so that the sleeve 18 and shaft rotate with each other.

This lug 21 is arranged to be disposed ap-- proximately flush'with the bearing surface of the sleeve 18.

As a means for preventing lateral .wmovement of the sleeve 18 relative to the shaft 12 there has been provided a guide screw 22 that is mounted within the hub 14 and arranged for engagement at its unheaded or inner end with a circular groove 23 formed .inthe sleeve 18. The operating pulley 13 is disposed approximately centrally'of, the ends of the shaft 12 and the hub 14 and eotiperating parts are arranged u'ponone side of the pulley thus providing the proper space for the positioning and the operation of the clutch mechanism whichwill be latermore fully described. I.

The pulley 13 is provided upon its face opposite to that carrying the enlarged hub portion 14 with an annular recess 24: arranged about a cylindrical clutch member 25 which communicates at its inner end with the hub 14: and maybe formed 1 integral therewith and is internally screw threaded. A pin 26 is arranged in the recess 24 and is for a purpose which will be later described.

The clutch mechanism consists mainly of a casting designated 27 as an entiretyfandillustratedin detail in Fig. 7 in the drawings. The casting 27 is shaped generally 1n the cylindrical form and is constructed in' the nature of a spool with a central bore 28 to provide for the mounting of the casting 27 upon the shaft 12. The casting 27 con-- extending circular flange 31" which forms aspring receiving chamber 32 arranged to receivea llal: expansive springi 'i similar to the one H3 previously descrlbcd. 'lhe flange 31 is slotted as at 8-l t0"'1 'eceive one terminal of the spring 33. Loosely mounted upon the shaft l2 and extending'wil'hin the chamber- 32 is a \'lindri -al sleeve that illustrated in detail in Fig. 10 inth'e drawings. Thc.

end of this sleeve 33 that is extemled within the chamber 32 is-provided. with a lug'ilti to i which is serurwl theother terminal of the spring 33. The outer end -rl' thc sleeve 35 is provided with diametrically, opposed in wardly extending recesses 37'adapted to receive a suitable tool for adjustment after-tho manner which will be later described. The

outer end of this sleeve 35 is clamped by the bearing elements 10 and 11 and houses the adjacent end of the shaft 12.

The detachable bearing plate 11 may be secured sufliciently tight to hold the sleeve 35 against rotation withtheshaft 12. 'It

will thus be seen that a suitable'tool may be placed in engagement with the recesses 37 and the sleeve 35 rotated until the desired tension 0; the spring 33fis provi'ded Whereupon the detachable bearing plate 11 may be screwed tightly and the. desiredspring action maintained. A; flanged centrally apertured cap 38 is mounted upon the flange 31.

'ifit within the internally screw threaded c clutch member 25. The innermost flange 30 is provided with a circular laterally extending flange 39 that is provided with a cam ledge lOai-raxiged'to provide a stop shoulder ell. This flange 39 is arranged to fit within the annular recess 24 and rotate therein, whilethe screw threaded body portion 29 of the clutch ineclnmism is being turned into the internally screw threaded clutch meniber 25 as will-be later more fully described.

A' guide attachment for the tape 4 designated 42 is secured to some suitable part of I the typewriter l and provided with an apertured portion -i3 through which is inserted the tape'l. This guide 42 is preferably arranged adjacent the end of the typewriter to whioh'the attachment 2 is secured. A guide for the tape or flexible element 31 designated ail as an entirety and particularly illustrated in Fig. 11 consists of a bar 45 having one end bent at right anglesto the body portion and designated 46 and secured in any suitable manner. The bar 44: is ar- .to the bightportion of" theU-shaped bracket ranged to extendlaterally' fronnthe types writer 1 and beneath the casting forming a part of the clutch mechanism and is provided at its outer end with oppositely arranged hook shaped portions 4;? arranged to receive the flexible element 31. The flexible element or tape 31 is designed to be pulled downwardly by some suitable means not shown. to be operated-by the person operat- 120.

The operation of the attachment may be ing the typeivriter.

tv ewriter kevs ca'uses. .thel carria' e 2 to 'moveto the left. this being the operation of the standardtypewriter. Assuming thatthc attachmentl is secured after the manner dcscr'lbed to the typewriter 1 when tl1e earriageS moves to the left, the tape 4 is un- 'wound from the pulley 13 which is rotated in a counter clockwise direction against the action of the spring 16 causing the spring to wind up. When the carriage 3 has reached its outermost extended position and the operator is desirous of returning it to normal position, the flexible element or tape 31 is pulled downwardly causing the casting 27 of the clutch mechanism to be rotated in a clockwise direction and the screw threaded body portion 29 thereof to move into threaded engagement with the clutch mem ber 25. This action continues until the stop shoulder 11 engages the pin 26 in the annular recess 24 of the pulley 13 at which time the rotary movement of the casting 27 of the clutching mechanism imparts a similar movement to the pulley 13. Thus it will be seen that the carriage 3 is returned to its normal position andithe line spacing provided as the pull communicated the tape 4 that is attached to the line spacing lever 6 is suflicient to first space the line and then pull the carriage 3 to its normal position. When the flexible element 31 is being pulled. downwardly it is unwinding from the casing 27 of the clutching mechanism and rotating against the action of the spring 33 which is being wound up. Immediately upon the release of the flexible element 3l.the spring 33 unwinds and a counter clockwise rotation is imparted the casting 27 of the clutch mechanism thus causing it to move out of operative engagement with the pulley 13 and clutch member 25 car ied thereon. It will thus be seen that the pulley 13 is free to rotate when the clutch' mechanism is moved into inoperative position after the manner described; The spring 16 serves to provide for the desired tension of the tape 4 when the carriage is returned by hand in the usual way and it will be noted that the ordinary operation of the typewriter is not interfered with by the application of the attach: ment hereinbefore described and illustrated in theaccompanying drawings; It will also be noted that any suitable means may be employed for exerting a downward pull on the flexible element 31 and in this connection it has not been thought necessary to specifu cally describe or illustrate certain means which might be used successfully.

()ne of the most essential points of the invention is the fact that the attachment may be readily attached to typewriters of all kinds, in some instances necessitating only slight changes of construction and ar-' rangemcnt. It will be also noted that there has been provided an automatic clutch releasing mechanism which is of a novel construction andarrangement and permits the construction of an eliicient and extremely reliable device for returning the typewriter carriage and automatically spacing a'linc.

In reduction'to practice, 1 have found that the form of my invention, illustrated in the drawings and referred to in the above description, as the preferred embodiment, is the most etlicient and practical; yet realizing that the conditions concurrent with the adoption ofmy device will necessarily vary, I desire to emphasize the fact that various minor changes in details of construction, proportion and arrangement of parts may be resorted to, when required, Without sacrificing any of the advantages of my invention, as defined in the appended claims.

What is claimed is 1. An attachment for typewriters coInprising a bracket, a shaft mounted in the bracket, a pulley rotatably mounted upon said shaft, a flexible element secured to said pulley and to the carriage of said typewriter arranged to wind on said pulley, an internally screw threaded cylindrical clutch member carried by said pulley, a second clutch member rotatably journaled upon said shaft, a screw threaded portion on said second clutch member cooperating with the first clutch member, and means for moving said second clutch member into inoperative position whereby said pulley is free to rotate.

2. A typewriter attachment comprising a supporting bracket, a shaft mounted in said bracket, a pulley rotatably mounted upon said shaft and operatively connected with the carriage of said typewriter, said pulley having an enlarged hub portion arranged upon one side thereof, said hub portion being recessed to provide a spring chamber, a spring mounted within said chamber and arranged above said shaft, a sleeve mounted upon said shaft and extending into said chamber, said sleeve having a recess adjacent one end, a lug formed on said shaft and extending into said recess, said spring being secured at its terminals to said hub and the sleeve, said pulley being provided upon its face opposite to the hub portionwith a recess, a cylindrical internally screw threaded 'clutch member. carried tentrally within the recess, a stop pin arrangedwithin the recess, a clutch member rotatably i'nounted' upon said shaft cooperating with said first named clutch member and stop pins to rotate said pulley to return said carriage and means for auton'iatically moving said second clutch means into inoperative position whereby the pulley is free to rotate in either direction.

A typewriter attachment consisting of a shaft, means to support the shaft, a pulley mounted upon said shaft and operativcly connected with the carriage of said typewriter, said pulley having a hub portion arranged thereon, said hub portion being formed with a spring chamber, a spring mounted within said chamber, a sleeve mounted on said shaft and extending into said chamber, said sleeve having a recess adjacent to one end, means carried on said shaft to extend into the recess, said spring and means for automatically moving the being seeured at its terminals to the hub. clutch member into inoperative position and sleeve, said pulley being provided upon whereby the pulley is free to rotate in either its facx'bpposite to the hub portion with a direction.

5 recess/ a cylindrical clutch member carried In testimony whereof I aiiix my signature 15 Within the recess, a stop pin Within the rein presence of two Witnesses.

cess, a clutch member mounted upon said HENRIETTA C. CLINTON. shaft rotatably and cooperating With said Witnesses: first named clutch member and stop pin to WILLIAM H. MACK,

0 rotate said pulley to return said carriage FRANCIS A. TIBBITTS. 

